Grease-cup base.



D. H. TWAITS.

GREASE CUP BASE.

APPLICATION HLED DEC. 22, m3.

1,225,078. Patented May 8,1917.

a e 3 I UNITED STATES PATENT oFrioE.

DANIEL H. TWAITS, OF CHICAGO, ILLINOIS.

GREASE-CUP BASE.

To all whom it may concem:

Be it known that I, DANIEL H. TWAITS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Grease-Cup Bases. ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings.

This invention relates to grease cup bodies of a type having a stemthreaded at its lower end, an intermediate angular portion and anenlarged head fitting the interior of a suitable cap. The general objectis to provide a strong, durable body of this nature which shall beetficient in service and very cheaply manufactured. A further object isto provide the head with resilient portion engaging the interior of thecup to prevent the leakage of grease past the head and to provide asupport on either side of said resilient portion so arranged that thehead may be of simple construction.

My invention is hereinafter more fully described, and the essentialcharacteristics set out in the claims.

Figure 1 is a side elevation of my grease cup body; Fig. 2 is acentralvertical section of the same; Fig. 3 is a vertical centralsection of the upper disk of the head and Fig. 4 is a bottom'view of thesame; Fig. 5 is a side elevation of the lower disk of the head, and Fig.6 is a plan of the same; Fig. 7 is a horizontal section taken on theline 7-7 of Fig. 2; Fig. 8 is a central vertical section of the bodyshowing a modified construction, and Fig. 9 is a plan of the same.

The stem 10 of the body, comprises a tubular member having an angularportion 11 preferably hexagonal, which is enlarged slightly at 12 and issquared off at the upper end of the stem. Below the angular portion 11the stem is reduced to form a nipple which is threaded as shown at 14:.

The interior of the portions 11 and 12 of thestem is angular,corresponding to the angular exterior, and fitted into the portion 12,is a tubular member 15,'forming a sleeve which may be drawn from thecentral portion of the disk 16 leaving an angular opening 17communicating when in place, with the interior of the portion 11. Fittedaround the sleeve 15 and lying against the under surface of the disk 16is a washer 18 of leather, felt or other suitable resilient material.This. washer is secu e y heldagainst Specification of Letters Patent.

Patented May 8, 1917.

Application filed December 22, 1913. Serial No. 808,166.

the disk 16' by meansof a washer-like disk 20 having an angular opening21 fitting the outside of the sleeve 15.

The outside of the sleeve 15 is preferably made a press fit in theinterior of the portion 12 of the'stem, thus when the parts are forcedtogether they are rigid with one another, and being angular, one cannotturn with relation to the other and these parts maybe further securedagainst coming apart by one or more rivets, such as indicated at 23. IIn the modified form, instead of using rivets'23, I provide upwardlyextending projections 30 preferably made integral with the upper end ofthe stem. These projections extend through the disk 16 which hassuitable openings fitting over them. These openings are flared at thetop allowing the metal to be upset to engage the disk while leaving asubstantially smooth surface on the upper side thereof. In this form,the resilient washer 18 and the disk 20 are provided with notches in thesides of the central openings to admit these projections 30. WVhen theparts described are assembled, the disk 15 is prevented from moving withrelation to the stemby the tightness of the fit of the sleeveinto theupper portion of the stem, which at the same time prevents grease fromseeping through the joint. The disk 20 restingv against the shoulderprovided by the upper portion'of the stem, securely holds the resilientwasher in place. The disk 16 may be threaded on its periphery tocooperate with the interior threadsof the grease cup cap, allowing thecap to be screwed down onto the head to force grease through the sleeveand stem, to the bearing surfaces. The resilient washer is preferablymade slightly larger than the periphery of the disk 16 so that whenscrewed into place it will conform to the threads of the cap, making atight joint therewith. The disk 20 is preferably of smaller diameterthan the disk 16 to allow its periphery to clear the top of the threadsin the cap, and this disk may be provided with humps 25 pressed upwardlyat its periphery to engage the resilient washer and cause it to turnwith the head. In the modified form, the parts are verysecurely heldtogether by means of the projections 30 which not only act to preventthe parts becoming separated, but also engage each of the parts toprevent any of them turning with relation tothe others.

It will be seen from the foregoing description that the sleeve 15 may bereadily formed by drawing out the central portion of the disk 16, andthe disk 20 may be readily formed by stamping, while the stem may beformed from a piece of plain tubing, by forming the angular portions anddrawing out the end of the tube to form the stemfor the threads 14. Inthe modified form, the projections 30 may conveniently be made byshearing away the intervening portions of the stem. Thusthe grease cupbody may be largely made by pressing and stamping operations which arecomparatively cheap, and at the same time the body so formed is verydurable and of simple construction.

Having thus described my invention, What I claim is:

1. A grease cup body comprising a stem having an angular tubular upperportion and a threaded lower portion, and a head having an angulartubular portion extending from the side thereof, the angular tubularportion of one member embracing the angular tubular portion of theother.

2. A grease cup body comprising a stem having a threaded lower end, aninternal passageway, an angular portion at its upper end, a headcomprising a disk having an angular-sleeve extending from the sidethereof and engaging the angular portion of the head, and projections onthe stem extending through the disk and having their ends upset toengage the same.

3. A grease cup body comprising a stem having a threaded lower end, aninternal passageway, an angular portion at its upper end; a headcomprising a disk having an angular sleeve extending from the sidethereof and engaging the angular portion of the stem, and means forpositively securing the head to the stem.

4:. In a grease cup body, the combination of a stem having an angulartubular end, a disk having an angular tubular sleeve extending from theside thereof and pressed into said tubular end, and a resilient washersurrounding said sleeve and resting against said washer, and a seconddisk resting against said resilient washer and abutting the upper end ofthe stem.

5. In a grease cup body, the combination of a hollow stem having athreaded lower end and an angular portion at its upper end,

a disk having an angular sleeve pressed from the side thereof and fittedinto the upper end of said stem, a washer of resilient materialsurrounding said sleeve and fitted against said disk, and a second diskhaving an angular opening surrounding said sleeve, said second diskresting against said washer and abutting the upper end of the stem.

6. In a greasecup body, the combination of a tubular stem having athreaded lower end and an angular upper end, a disk having a threadedexterior and an angular sleeve extending from the side thereof formingan opening through the disk said sleeve engaging the interior of theangular portion ofthe stem, a resilient washer surrounding said sleeveresting against the under side of said disk, and a second disk ofslightly smaller diameter than the first mentioned disk having anangular central opening embracing said sleeve, said second disk restingwhen in position against the upper end of the stem and having meansengaging the, resilient washer to prevent the same turning with relationto the other disk and stem.

7. In a grease cup, the combination of a tubular stem having a pluralityof projections extending from the upper end thereof, and a head having acentral opening, said projections extending through said head by beingupset to hold the head in place.

8. In a grease cup body, the combination of a stem having a threadedlower end, a hollow interior, a series of projections extending from theupper end, a head having a central opening and cut away portionsadjacent said opening in which said projections extend when the head isin place on the stem.

9. In a grease cup, the combination of a stem having a tubular portion,a head having a tubular portion rigid therewith one of said tubularportions fitting into the other, and projections on the stem engagingthe head. 7 I

10. A grease cup body comprising a stem having an angular tubularportion, a head having an angular tubular portion rigid therewith andextending from the side thereof, one of said tubular portions beingfitted tightly into the other, and projections on one of said membersextending into the other.

11. A grease cup body comprising a stem having an angular upper portion,projectlons extendlng therefrom and a threaded lower portion, and a headhaving an angular portion extending from the side thereof and engagingthe angular end of the stem, said projections extending through saidhead and being upset on the upper side thereof.

12. A grease cup body comprising a stem having a tubular end, a diskhaving a tubu lar portion extending from the side thereof and engagingthe portion of the stem, a

washer of resilient material beneath said disk, a second disk beneathsaid washer, and projections on the stem extending through said disksand washer.

18. In a grease cup body, the combination of a. stem having a tubularend, a disk having a tubular sleeve extending from the side thereof andpressed into said tubular end, a

resilient washer surrounding said sleeve and resting against said washersaid second disk abutting the upper end of the stem, and pro jeetions onthe stem extending through said disks and washer and upset to engage thefirst mentioned disk.

14. A grease cup body comprising a head and a tubular member dependingtherefrom, a circular resilient member of the same diameter as the headand lying beneath the same, a disk-like member surrounding the sleeveand lying against said resilient member to hold the same in position,and a second sleeve member extending over the first sleeve member andengaging "said disk-like member.

15. In a grease cup body, the combination of a head, a stem extendingdownwardly therefrom, a resilient member underneath the head beingcircular and substantially the same diameter as the head, and a disklikemember resting against the resilient member and acting to hold the samein position, said stem having a shoulder on the stem engaging beneaththe disk-like member to hold it in position.

16. In a grease cup body, the combination of a head, a stem extendingdownwardly therefrom and having a non-circular exterior adjacent thehead, a resilient Washer underneath the head, and a disk-like memberresting against the resilient Washer and holding the same in position,said stem having a shoulder engaging the disk-like member and serving tohold the same in position.

In testimony whereof, I hereunto affix my signature in the presence oftWo Witnesses.

DANIEL H. TWAITS.

WVitnesses H. L. HALL, W. Gr. MORFORD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

